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Finding the Fourth Proportional to 260,010.10, 390,015.15 and 147,646.90

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Solution

The fourth proportional to 260,010.10, 390,015.15 and 147,646.90 is: 221,470.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    260,010.10 : 390,015.15 = 147,646.90 : x
  2. Step 2: Convert to fraction form
    260,010.10/390,015.15 = 147,646.90/x
  3. Step 3: Cross multiply
    260,010.10x = 390,015.15 × 147,646.90
  4. Step 4: Simplify right side
    260,010.10x = 57,584,527,850.54
  5. Step 5: Solve for x
    x = 57,584,527,850.54/260,010.10
  6. Step 6: Final answer
    x = 221,470.35

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.